Variable-rate design of quieter slice-select pulses
Christopher J. Hardy 1 , Seung-Kyun Lee 1 , and Michael J. Wittbrodt 1
GE Global Research, Niskayuna, NY, United
Slice-select pulses can be made quieter by derating
them, i.e. by reducing gradient slew rate and/or
amplitude (along with RF bandwidth), but this increases
minimum echo time. The variable-rate principle is used
here to design sliceselect pulses with improved
acoustic signature and with identical slice profiles
on-resonance, without lengthening pulse duration.
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